Orthodontia appliance.



c. P. MONTAG. ORTHODONTIA APPLIANCE.

APPLICATION FILED APR. 21, 1910.

1,002,536. I Patented Sept. 5,1911.

CI-IRISTOPI-I FRIEDRICH MONTAG, OF BLUE ISLAND, ILLINOIS.

ORTHODONTIA APPLIANCE.

Specification of Letters Patent.

Patented Sept. 5, 1911.

Application filed April 21, 1910. Serial No. 556,746.

To all whom it may concern:

Be it known that I, Crrnrsrorrr FRIED- RICH MoN'rAo, a citizen of the United States, residing at 284: Western avenue, Blue Island, in the county of Cook and State of Illinois, have invented new and useful Improvements in Orthodontia Appliances, of which the following is a specification.

My invention relates to certain new and useful improvements in orthodontia appliance and is fully described and explained in the specification and shown in the accompanying drawing, in which:

Figure l is a plan view of my complete device showing the position with which the same occupies with reference to the teeth upon which it is used; Fig. 2 is a detailed elevation of a portion of the device, the outer tube being partially broken away Fig. 3 is a similar view of another portion of the device and Fig. 4 is a similar View of a modified form of construction.

Referring to the drawings A is an arch in usual form threaded at its end to receive upon it a sleeve B to which is secured the anchor band, adjusting nuts of usual form being provided for the purpose of putting the requisite tension upon the arch.

In the use of orthodontia appliances provided with an ordinary smooth arch, considerable difficulty has been experienced in the use of ligatures for straightening teeth which required turning because of the fact that said ligatures slip on the arch, and several eXpedients have been suggested for provi ding engagement notches or the like in the arch, with which said ligatures could engage. It is practically impossible to notch the arch itself for this purpose, because the arch is under such tension that any weakening of it upon its outer side will result in breaking, and as a result it has been found necessary to provide for the purpose in question a projecting part additional to the metal of the arch proper, which projecting part can be notched or was so formed as to have inherent notches in which a ligature could lie. Arches have been formed with ribs, which were notched for this urpose, and it has also been proposed to p ace a coiled spring upon the arch, between the turns of which a ligature could lie. Such constructions are however, disadvantageous, as are all constructions of the character which have heretofore been proposed, in that the projecting part with its notches is uncomfortable and cuts or irritates the lip of the wearer. The object of the present invention is to provide a ligature engaging device of such form that it will in no way irritate the wearer or have any tendency to cut his lip. To this end I place upon the arch A a tube C which is cut away to form a series of notches c in any one of which a ligature may lie without difiiculty. The ends of the tube G are beveled off at 0 so that the ends of the tube form no rough projections which might irritate the mouth. The tube is made in practice of very thin metal and the notches are made of such small size that their roughness would be immaterial.

The structure may be made in either of the two forms shown in the drawing, that is to say it may put out with a series of notches arranged at intervals, the notches being made in the factory, and the desired notches being utilized by the dentist in applying the apparatus to the patients mouth, or if desired, the tube can be placed in position and the device completed without the making of any notches whatever, in which case the dentist may out just such notches as he needs, a small grinding tool placed in his dental engine being quite sufficient for the purpose. The second type of device which is illustrated in Fig. 3 is preferable in the sense that there are absolutely no roughnesses which might interfere with the patients comfort, the notches which are made being actuallv occupied and filled by the soft ligatures, or by the ligature wires, while the other method of construction that is the one shown in Fig. 2 is preferable because less work is required in applying the device.

I realize that considerable variation is possible in the details of construction of my improved device, without departing from the spirit of my invention, and I do not intend, therefore, to limit myself to the specific form herein shown and described.

What I claim as new and desire to secure by Letters Patent, is:

1. In a device of the class described, an

arch, and a tube surrounding the same and my hand this 15th day of April, nineteen adapted to be notched for the purpose set hundred and ten, in the presence of tWo sub- 10 forth. scribing Witnesses.

2. In a device of the class described, an

' arch, a tube fitting over the arch, said tube OHRISTOPH FRIEDRICH MONTAG' being provided with ligature receiving Witnesses:

notches. CHAS. E. GAYLORD,

In testimony whereof, I have hereunto set RALPH A. SOHAEFER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

Washington, D. C. 

